Inventor
Helmar Amend
Inventor
Waiblingen, DE
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F02Bprimary
F02BInternal-combustion piston engines25%
F02FCylinders, pistons or casings, for combustion engines20%
B23PMetal-working not otherwise provided for10%
B27BSaws for wood or similar material10%
Y10TTechnical subjects covered by former us classification10%
B24BMachines, devices, or processes for grinding or polishing5%
B28DWorking stone or stone-like materials5%
F02DControlling combustion engines5%
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof5%
F16DCouplings for transmitting rotation5%
PatentTitleYear
9,272,438'Guide bar having a carbon fiber reinforced plastic insert'20168,033,896'Protective cover for a hand-held cut-off machine'20117,458,153'Method for making a cylinder for a two-stroke engine'20087,278,395'Manually operated implement driven by an internal combustion engine'20077,159,314'Method for making a cylinder'20077,066,120'Two-cycle engine'20067,021,253'Two-cycle engine'20066,945,203'Two-cycle engine'20056,832,582'Two-stroke engine and method of making the same'20046,502,315'Work apparatus having a centrifugal clutch'2003Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2003Patents assigned to STIHL MASCHF ANDREAS (1)· patent assignee history
2003–2008Based in Waiblingen, DE· patent location history
2004–2016Patents assigned to STIHL AG & CO KG ANDREAS (9)· patent assignee history
2011Based in Wablingen, DE· patent location history
2016Based in Ludwigsburg, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| STIHL AG & CO KG ANDREAS | 9 | 2004–2016 |
| STIHL MASCHF ANDREAS | 1 | 2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Waiblingen, DE | 8 | 2003–2008 |
| Ludwigsburg, DE | 1 | 2016 |
| Wablingen, DE | 1 | 2011 |